In 1915–17, Forrest was a member of Headquarters Troop, Third New Jersey Infantry, and during that period, he collaborated with Lee Pape, author of Little Benn's Notebook, on a color Sunday page of comics for The Philadelphia Record.
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At Kelly Field, he drew cartoons for the camp newspaper, the Kelly Field Eagle, and also was art editor of The Set-up, a camp newspaper in Waco, Texas.
Nathan Bedford Forrest | Forrest Gump | Hal Roach | Hal Holbrook | John Forrest | Hal David | HAL 9000 | Hal Willner | Hal McKusick | Hal Linden | Hal Galper | Hal Ashby | Forrest | Ted Forrest | James Hal Cone | Hal Ketchum | Hal Jordan | Forrest Gump (character) | Hal Rogers | Hal Miller | Hal Clement | HAL | George Forrest | Forrest Tucker | Edwin Forrest | Shallow Hal | Forrest Twogood | Forrest Group | Barbara Forrest | HAL Tejas |