During World War II, a junior American Army officer, Lt. Peter Stirling, gets sent to the psychiatric ward whenever he insists that an Army mule named Francis speaks to him.During World War II, a junior American Army officer, Lt. Peter Stirling, gets sent to the psychiatric ward whenever he insists that an Army mule named Francis speaks to him.During World War II, a junior American Army officer, Lt. Peter Stirling, gets sent to the psychiatric ward whenever he insists that an Army mule named Francis speaks to him.