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The First World War ended in 1918. The Korean War began only thirty-two years later.
That relatively short period produced enormous changes in warfare.
In 1918, armies fought from extensive trench systems. Infantry attacks were supported by artillery, machine guns, and increasingly important aircraft and tanks. Communications were often slow and unreliable. Commanders depended heavily on runners, telephones, and written orders.
By the Second World War, warfare had become highly mobile. Armoured formations, air power, mechanized logistics, radio communications, amphibious operations, and combined-arms tactics had transformed the battlefield.
Then came Korea.
The Korean War combined elements of both earlier conflicts. During some phases, armies moved rapidly across hundreds of kilometres. During others, the war became a struggle for heavily defended hills that resembled the trench warfare of the First World War.
Several American generals experienced all three conflicts.
Some entered the First World War as young officers. They became senior commanders during the Second World War and then returned to lead major forces in Korea.
By the Korean War, however, they were no longer young men.
Many were in their late fifties or early sixties.
Were they still effective?
The answer is generally yes, although their performance varied. Their age did not automatically make them ineffective. Experience, leadership style, physical health, and willingness to adapt often mattered more than the number of years they had lived.
A Generation Shaped by Three Wars
The American officers who served in all three wars belonged to a generation that entered the military before the United States became a global superpower.
Many had attended the United States Military Academy at West Point.
Their early careers were shaped by:
- The Mexican border crisis
- The First World War
- The interwar reduction of the U.S. Army
- Military education and staff work
- The rapid expansion of the Army before the Second World War
During the 1920s and 1930s, the U.S. Army was relatively small.
Promotion was slow.
Many capable officers spent years commanding small units or teaching at military schools.
The Second World War changed everything.
The Army expanded dramatically.
Officers who had spent decades preparing for major war suddenly received commands involving hundreds of thousands of soldiers.
By the time the Korean War began in 1950, many of the most experienced American commanders were veterans of both world wars.
Douglas MacArthur
Age When He Entered the First World War
Douglas MacArthur was born on January 26, 1880.
He graduated from West Point in 1903.
When the United States entered the First World War in April 1917, MacArthur was 37 years old.
He had already served in the U.S. Army for fourteen years.
MacArthur was assigned to the 42nd Infantry Division, known as the Rainbow Division.
He initially served as the division’s chief of staff.
Later, he commanded the 84th Infantry Brigade.
MacArthur became known for his personal courage.
He frequently visited front-line positions and participated directly in combat operations.
He received several decorations for bravery.
His experiences in the First World War helped establish his reputation as an aggressive and highly visible commander.
MacArthur in the Second World War
By the beginning of the Second World War, MacArthur was one of America’s most famous military leaders.
He had served as Chief of Staff of the U.S. Army from 1930 to 1935.
He then became military adviser to the government of the Philippines.
When Japan attacked the Philippines in December 1941, MacArthur commanded American and Filipino forces.
The campaign ended in defeat.
American and Filipino forces were forced to surrender at Bataan and Corregidor.
MacArthur escaped to Australia under orders from President Franklin Roosevelt.
He later became commander of the Southwest Pacific Area.
MacArthur directed campaigns in:
- New Guinea
- The Solomon Islands
- The Philippines
He used an operational strategy often called island hopping or leapfrogging.
Rather than attack every Japanese position, Allied forces bypassed some strongholds and captured strategically important locations.
MacArthur returned to the Philippines in 1944.
By the end of the war, he was one of the most famous military commanders in the world.
MacArthur in Korea
When North Korea invaded South Korea in June 1950, MacArthur was 70 years old.
He was the senior American commander in the Far East.
The early months of the war were disastrous for United Nations forces.
North Korean troops rapidly advanced south.
American and South Korean forces were pushed back to the Pusan Perimeter.
MacArthur responded with one of the most ambitious operations of the war.
In September 1950, United Nations forces landed at Inchon, far behind North Korean lines.
The landing was risky.
Inchon had difficult tides, narrow approaches, and limited landing areas.
Many military leaders opposed the plan.
MacArthur believed that surprise and strategic impact justified the risks.
The operation succeeded.
United Nations forces captured Seoul.
North Korean forces collapsed and retreated north.
The Inchon landing was one of the greatest operational successes of the Korean War.
However, MacArthur’s later decisions were much more controversial.
United Nations forces advanced toward the Chinese border.
MacArthur believed that China was unlikely to intervene on a large scale.
In October and November 1950, Chinese forces entered the war.
The United Nations forces suffered a major reversal.
MacArthur then publicly disagreed with President Harry Truman’s policy of limiting the war.
He argued for expanding military operations against China.
Truman believed that such a conflict could lead to a wider war with the Soviet Union.
MacArthur continued to make public statements that challenged administration policy.
In April 1951, Truman removed him from command.
Was MacArthur Still Successful?
MacArthur’s performance in Korea was mixed.
His leadership at Inchon was brilliant.
The operation reversed the military situation and saved South Korea from likely defeat.
However, his assessment of Chinese intervention was seriously mistaken.
His relationship with civilian leaders also became increasingly difficult.
MacArthur remained imaginative, bold, and influential at age seventy.
But his later decisions demonstrated the dangers of overconfidence and the importance of civilian control over the military.
Retirement
MacArthur was removed from active command in April 1951 at age 71.
He never returned to military service.
Matthew Ridgway
Age When He Entered the First World War
Matthew Ridgway was born on March 3, 1895.
He graduated from West Point in 1917.
When the United States entered the First World War, Ridgway was 22 years old.
He was commissioned as a second lieutenant.
Ridgway served in the United States during the war and did not experience combat in France.
Nevertheless, the war began his long military career.
Ridgway in the Second World War
Ridgway became one of the most respected American commanders of the Second World War.
He commanded the 82nd Airborne Division.
He helped develop American airborne doctrine.
Ridgway participated in:
- The invasion of Sicily
- The invasion of Italy
- The Normandy campaign
- Operation Market Garden
- The Battle of the Bulge
He was known for leading from the front.
Ridgway frequently wore a grenade and carried a rifle.
He believed that commanders should understand battlefield conditions personally.
In 1944, he became commander of the XVIII Airborne Corps.
He continued to command major forces during the final campaigns in Europe.
Ridgway in Korea
Ridgway was 55 years old when he arrived in Korea in December 1950.
The situation was extremely serious.
Chinese forces had entered the war.
United Nations troops were retreating.
Morale was low.
The commander of the Eighth Army, General Walton Walker, had been killed in a vehicle accident.
Ridgway took command of the Eighth Army.
He immediately began rebuilding morale.
He visited front-line units.
He demanded that commanders focus on fighting rather than retreating.
Ridgway carried grenades and a rifle, reinforcing his reputation as a combat leader.
He also changed the way the Eighth Army fought.
Rather than allowing Chinese forces to dictate the pace of operations, Ridgway used artillery, air power, and defensive positions to inflict heavy casualties.
The United Nations forces stopped the Chinese advance.
They then launched a series of counteroffensives.
Seoul was recaptured.
Ridgway transformed the situation.
In April 1951, MacArthur was removed from command.
Ridgway became commander of all United Nations forces in Korea.
He continued to stabilize the front.
The war gradually became a conflict of limited offensives and negotiations.
Was Ridgway Still Successful?
Yes.
Ridgway’s performance in Korea is widely regarded as one of the most successful examples of military leadership during the war.
He inherited an army that was retreating and discouraged.
He restored its confidence.
He adapted tactics to the strengths of American and United Nations forces.
He understood that the war had changed.
Unlike MacArthur, Ridgway accepted the political limits placed on the conflict.
He recognized that military success had to support a broader strategy.
Retirement
Ridgway later served as Chief of Staff of the U.S. Army.
He retired in 1955 at age 60.
J. Lawton Collins
Age When He Entered the First World War
Joseph Lawton Collins was born on May 1, 1896.
He graduated from West Point in 1917.
He was 21 years old when the United States entered the First World War.
Like Ridgway, Collins did not serve in combat overseas during the war.
He remained in the United States.
However, his career developed rapidly during the interwar period.
Collins in the Second World War
Collins became one of the most effective American field commanders.
He commanded the 25th Infantry Division in the Pacific.
His division fought on Guadalcanal.
Later, Collins commanded the VII Corps in Europe.
The VII Corps played a major role in:
- The D-Day invasion
- The liberation of France
- The Battle of the Hürtgen Forest
- The Battle of the Bulge
- The advance into Germany
Collins became known as “Lightning Joe.”
He was respected for his speed, energy, and ability to coordinate large formations.
He was considered one of the strongest American corps commanders.
Collins in Korea
Collins was 54 years old when the Korean War began.
He did not command troops directly on the Korean battlefield.
Instead, he served as Chief of Staff of the U.S. Army.
This was an extremely important position.
The Army had been reduced after the Second World War.
The Korean War required rapid expansion.
Collins was responsible for:
- Mobilizing additional forces
- Improving training
- Increasing military production
- Supporting troops in Korea
- Rebuilding the Army
He also worked with political leaders and senior commanders.
Collins visited Korea and participated in strategic discussions.
Was Collins Still Successful?
Yes.
Collins’s contribution was primarily organizational and strategic rather than tactical.
He helped transform an underprepared postwar Army into a force capable of supporting a major war.
His work demonstrated that military leadership was not limited to battlefield command.
Retirement
Collins retired from the Army in 1956 at age 60.
James Van Fleet
Age When He Entered the First World War
James Van Fleet was born on March 19, 1892.
He graduated from West Point in 1915.
When the United States entered the First World War, Van Fleet was 25 years old.
He served in France.
He commanded a machine-gun battalion during the Meuse-Argonne Offensive.
Van Fleet gained important combat experience during the final months of the war.
Van Fleet in the Second World War
Van Fleet became a highly effective combat commander.
He commanded:
- The 8th Infantry Regiment
- The 4th Infantry Division
- The 90th Infantry Division
- III Corps
His forces participated in:
- D-Day
- The Normandy campaign
- The advance across France
- The Battle of the Bulge
- The invasion of Germany
Van Fleet developed a reputation for aggressive leadership.
He was respected by soldiers and junior officers.
Some historians have argued that his promotion was slowed because General George Marshall mistakenly believed that Van Fleet was related to a political figure he disliked.
Whether or not that explanation accounts for all of Van Fleet’s career, he eventually received major commands.
Van Fleet in Korea
Van Fleet was 59 years old when he became commander of the Eighth Army in April 1951.
He replaced Ridgway after Ridgway became commander of United Nations forces.
Van Fleet inherited an army that had recovered from the crisis of late 1950.
The front had stabilized near the 38th Parallel.
Van Fleet directed major operations against Chinese and North Korean forces.
He supported aggressive limited offensives.
He also supervised the transition from mobile warfare to a more static conflict.
The war increasingly involved:
- Defended hills
- Artillery duels
- Trench systems
- Limited attacks
- Negotiations
Van Fleet was a strong advocate of maintaining military pressure during the armistice negotiations.
His forces inflicted significant casualties.
However, the political leadership did not want to expand the war.
The goal was to negotiate an armistice rather than achieve total victory.
Van Fleet’s son, Air Force Captain James Alward Van Fleet Jr., was killed during the Korean War.
Despite this personal loss, Van Fleet remained in command.
Was Van Fleet Still Successful?
Yes.
Van Fleet was an effective commander.
He maintained pressure on enemy forces and helped preserve the United Nations position.
He adapted to the limited-war strategy imposed by political leaders.
However, he believed that stronger military action might have produced a better outcome.
His approach reflected the tension between battlefield objectives and political limits.
Retirement
Van Fleet retired in 1953 at age 61.
Edward Almond
Age When He Entered the First World War
Edward Almond was born on December 12, 1892.
He graduated from the Virginia Military Institute and entered the U.S. Army in 1916.
When the United States entered the First World War, Almond was 24 years old.
He served in France as a machine-gun officer.
He received recognition for his service.
Almond in the Second World War
During the Second World War, Almond commanded the 92nd Infantry Division.
The division was composed largely of African American soldiers.
Its performance became controversial.
Almond criticized the combat effectiveness of some units.
However, historians have debated whether the division’s difficulties resulted from leadership, inadequate training, racial discrimination, poor organization, or other factors.
Almond later commanded the II Corps during the Italian campaign.
He was a capable staff officer and commander.
He also developed a close relationship with MacArthur.
Almond in Korea
Almond was 57 years old when the Korean War began.
He served as MacArthur’s chief of staff.
He later commanded the X Corps.
X Corps conducted the amphibious landing at Inchon.
Almond then commanded forces during the advance into North Korea.
His role became controversial during the Battle of the Chosin Reservoir.
X Corps was spread across difficult terrain.
Chinese forces attacked in large numbers.
The Marines and Army units fought their way south.
Almond was criticized for underestimating Chinese strength and for maintaining an optimistic view of the situation.
His relationship with Marine commanders was often difficult.
Some historians have argued that Almond’s command decisions contributed to the difficulties faced by X Corps.
Others note that the terrain, weather, logistics, and scale of Chinese intervention created problems that would have challenged any commander.
Was Almond Still Successful?
Almond’s record in Korea was mixed.
He played an important role in the successful Inchon operation.
However, his performance during the advance into North Korea and the Chosin Reservoir campaign remains controversial.
Unlike Ridgway and Van Fleet, Almond is not generally regarded as one of the strongest American commanders of the Korean War.
Retirement
Almond retired in 1953 at age 60.
Comparing Their Ages and Careers
| General | Age in 1917 | Age at the Start of the Korean War | Major Korean Role | Retirement Age |
|---|---|---|---|---|
| Douglas MacArthur | 37 | 70 | UN Commander | 71 |
| Matthew Ridgway | 22 | 55 | Eighth Army and UN Commander | 60 |
| J. Lawton Collins | 21 | 54 | Army Chief of Staff | 60 |
| James Van Fleet | 25 | 58 | Eighth Army Commander | 61 |
| Edward Almond | 24 | 57 | X Corps Commander | 60 |
These ages reveal an important fact.
Most of these commanders were not unusually old when they entered the First World War.
They were junior officers in their early twenties.
MacArthur was the exception because he had already served for more than a decade.
By Korea, however, they had accumulated thirty or forty years of military experience.
Did Age Reduce Their Effectiveness?
Not necessarily.
The Korean War demonstrated that older commanders could remain highly effective.
Ridgway was fifty-five when he took command of the Eighth Army.
He was physically active and frequently visited the front.
Van Fleet was nearly sixty when he became commander of the Eighth Army.
He remained energetic and aggressive.
MacArthur was seventy when the war began.
He planned the successful Inchon landing.
However, his age was not the main reason for his later difficulties.
His problems were more closely connected to strategic judgment, overconfidence, and conflict with civilian leadership.
The generals who performed best shared several characteristics.
They:
- Adapted to changing conditions
- Learned from earlier wars
- Maintained contact with front-line troops
- Understood the importance of logistics
- Accepted the political limits of the conflict
- Used modern technology effectively
Experience could be valuable.
But experience could also create problems.
Some commanders relied too heavily on lessons from earlier wars.
The Korean War required new approaches.
It involved limited political objectives, Chinese intervention, nuclear weapons, and the danger of a larger war with the Soviet Union.
A commander who expected a traditional victory could struggle to understand the new strategic environment.
The Challenge of Limited War
The Korean War differed from the Second World War.
During the Second World War, the United States pursued the unconditional surrender of Germany and Japan.
The Korean War had more limited goals.
The United States and its allies wanted to defend South Korea.
They did not necessarily want to destroy China or begin a global war.
This created tension.
Some commanders believed that military victory required expanding the war.
Political leaders feared that expansion could lead to conflict with the Soviet Union.
MacArthur became the most famous example of this disagreement.
Ridgway was more willing to operate within political limits.
Van Fleet supported aggressive military action but ultimately carried out the strategy established by civilian leaders.
The Korean War demonstrated that military success could not be separated from political goals.
Conclusion
The American generals who served in the First World War, the Second World War, and the Korean War belonged to an extraordinary military generation.
They witnessed the transformation of warfare.
They began their careers in an era of trenches, horse-drawn transport, and limited air power.
They became senior commanders during the age of tanks, aircraft, amphibious invasions, and mechanized warfare.
They then fought a limited war shaped by the threat of nuclear conflict.
Their performance in Korea was not identical.
Matthew Ridgway was arguably the most successful. He restored the Eighth Army and stabilized the war.
James Van Fleet effectively maintained the United Nations position and directed major operations during the later stages of the conflict.
J. Lawton Collins helped rebuild and expand the U.S. Army.
Douglas MacArthur achieved a brilliant victory at Inchon but made serious errors regarding Chinese intervention and clashed with civilian leaders.
Edward Almond played an important role in the Inchon operation but remains a controversial figure because of his leadership during the advance into North Korea.
Their careers demonstrate that age alone does not determine military effectiveness.
By the Korean War, these men were older.
But they also possessed decades of experience.
The most successful commanders were those who combined that experience with adaptability, energy, and an understanding of the political limits of war.
Their careers connected three generations of American military history—and helped shape the United States into a global military power.
For more on the Second World War, check out my Second World War Podcast.
