When the Aus troops landed on Gallipoli in WWI they carried 200 rounds per man of ammo but were not allowed to have charged magazines or loaded weapons in the landing boats.
The fear being an AD would alert the Turks before they got to the shore, well that all went south after the Turks started hosing them with MG fire whilst they were off shore.
They were allowed to have fixed bayonets which they put to good use upon landing which if anything about that sodded war the Australianicon bayonet work against the Turks & Germans was legendary.

As a fact the Germans feared us and how we got in with cold steel among them in the trenches as no 1/4 was given or asked in that situation.
Bit like the Argi's in the Falklands war when they heard the Gurkha's were advancing on their position with Kukri's they baled to a man fearing the deadly blade.