Question

What does a soldier keep in a frog?

Answer 1

A soldier keeps a bayonet in his bayonet frog (a sheath which their bayonet fitted into). A bayonet is a blade attached to the end of a rifle. It's just one of the items a British Army soldier wore in WW1. Depending on what part of the army they were serving in, soldiers in the British Army carried kit and different weapons. Together these usually weighed around 61lbs (27kg), which is about the same as ten light bowling b@lls.

Most soldiers had these standard items in their backpacks:

Greatcoat (a long army coat) 
Mess tin (like a lunch box to hold food) 
Washing kit 
Spare clothes 
Groundsheet (a waterproof sheet to use when sleeping or sitting on the ground) 

As their packs were so heavy, soldiers had to be careful not to carry too many extra items, even the letters their families sent could weigh them down and often had to be thrown away.

Aside from a bayonet frog on their belt, they also wore:

Two ammunition carriers holding 75 rounds (bullets) 
A haversack (bag with a shoulder strap worn across the body) 
A water bottle 
An entrenching tool (a combined pick and shovel) 

Officers on the other hand were given a few extra items, like a sword and pistol, a pair of wire cutters, binoculars or a telescope and a compass.

Answer 2

Explanation:

A soldier keeps a bayonet in his bayonet frog (a sheath which their bayonet fitted into). ... As their packs were so heavy, soldiers had to be careful not to carry too many extra items, even the letters their families sent could weigh them down and often had to be thrown away.