Brigadier General LeGrande Albert "Pick" Diller (16 February 1901 – 2 September 1987) was a United States Army officer during World War II.

[1][2] Born in Tonawanda, Erie County, New York, he had two brothers Everell (who retired as an army colonel), Thurlow Diller and two sisters.

Diller was commissioned as a 2nd Lieutenant of Infantry in the Regular Army on February 19, 1923, and he graduated Syracuse University in 1924 with a Bachelor of Science degree in chemical engineering.

In 1941, he became one of General Douglas MacArthur's personal Aides and on December 19, 1941, he received a promotion to the temporary rank of lieutenant colonel in the Army of the United States.

He was the lead US Army representative on the committee that arranged the formal Japanese surrender aboard the battleship USS Missouri in Tokyo Harbor on September 2, 1945.