1) Pietro Badoglio, 1st Duke of Addis Abeba
- WWI went from a Col. to Gerneral
- WWII remaind as general and resign in December 1940
2) Bernard Cyril Freyberg, 1st Baron Freyberg
- WWI British Army Capten and gained promotion to the rank of temporary Brigadier
- WWII Promoted to Lieutenant General and knighted via Knight Commander of the Order of the British Empire, Freyberg continued to command the New Zealand 2nd Division through the North African and Italian campaigns of the British Eighth Army.
3) Carl Gustaf Emil Von Mannerheim
- WWI Mannerheim served as commander of the Guards Cavalry Brigade (Under Russia), and fought on the Austro-Hungarian and Romanian fronts. He was promoted to Lieutenant General in April 1917 (the promotion was backdated to February 1915), and he took command of the 6th Cavalry Corps in the summer of 1917. In January 1918 the Senate of the newly independent Finland, under its chairman Pehr Evind Svinhufvud, appointed Mannerheim as Commander-in-Chief of Finland's almost nonexistent army,
- WWII Officially he became the Commander-in-Chief after the Soviet attack on November 30 1940.
4) Douglas MacArthur
- WWI MacArthur served in France as chief of staff of the 42nd ("Rainbow") Division. Upon his promotion to Brigadier General he became the commander of the 84th Infantry Brigade. A few weeks before the war ended, he became division commander.
- WWII On the day of the attack on Pearl Harbor (December 8, 1941, in Manila), MacArthur was Allied commander in the Philippines. He had over eight hours warning of a possible Japanese attack on the Philippines. MacArthur was ordered on August 29, to exercise authority through the Japanese government machinery, including Emperor Hirohito.[24] Some believe MacArthur may have made his greatest contribution to history in the next five and a half years, as Supreme Commander of the Allied Powers in Japan.
- Korea War MacArthur, as US theater commander, became commander of the UN forces.
Take note: Arthur and Douglas MacArthur were the first father and son to be awarded the Medal of Honor. (They remained the only pair until 2001 when Theodore Roosevelt was awarded one posthumously for his service during the Spanish American War. Theodore Roosevelt, Jr. had earned one posthumously for his service during World War II).