In the late 1960s, Fightin' Army was the host of the ongoing feature "The Lonely War of Willy Schultz", written by Will Franz and illustrated by Sam Glanzman.

Other notable contributors to Fightin' Army included Jon D'Agostino, Sanho Kim, Jack Keller, Rocke Mastroserio, and Warren Sattler.

Like the entire Charlton line, Fightin' Army went on a publishing hiatus between January and August 1969, issues #126 and #127.

"Willy Schultz" was a departure from most other combat features of this time, with its conflicted hero caught between loyalties, in part because of his German heritage.

In 2023, Dark Horse released a collected edition, including an added final chapter drawn by Wayne Vansant and an introduction by Stephen R.