1)An Amphibious Operation Attacking A Land Base That Is Carried Out By Troops That Are Landed By Naval Ships.
2) A Band Formed By Ex-Kittie Members Fallon Bowman And Talena Atfield. Mostly Techo/Electronic Style Music.
Mitch: Whatever happened to Fallon from Kittie?
Stephanie: She started her own band called Amphibious Assault. I have their album (District Six); it's really good.
another slang term for taking a dump, probably more so appropriate in naval/military settings. See bombing mission and deploy some troops.
Colonel, sir, I need to conduct an amphibious assault.