Possible Clues:

• Dangerous grenade, to a GI
• Shattering grenade, to a GI
• Grenade, in gaming lingo
• Certain grenade, slangily
• Assault with a grenade, as a superior officer
• Assault a CO, maybe
• Wound, in a way, as a fellow G.I.
• Assault a superior officer
• Kill, as one's military commander
• Wound with a grenade