He is of the large yellow bellied species, fierce in his war moods, and deadly when, from his spiral coil battery, "He pours at once his venom and his length."
"Memoirs of Orange Jacobs"
Orange Jacobs
Some of the hostile planes were red-bellied, and others which came searching the ground were big, porpoise-like planes.
"From Bapaume to Passchendaele, 1917"
Philip Gibbs
Passing one of those big-bellied howitzers was to me an agony.
"From Bapaume to Passchendaele, 1917"
Philip Gibbs