No known records. Counting those made by all combatants, there would have been tens of thousands made.
Grenades were used to blow things up a little bit ovious that one
Yes, hand grenades were widely used in WW1
barbed wire, flamethrower, mounted machine guns, tanks, submarines, hand grenades, gases and airplanes.
They had a handle on them. This allowed the thrower to get a longer range on their throws.
See: Conscription and WW1
just grenades and other chemical filled objects
The Hand Grenade was invented by the Chinese during the Song Dynasty. Clay or metal pots were filled with gunpowder, a fuze was lit and the bomb was thrown. Over time, improvements were made, some were effective, some not so much. William Mills is credited with developing the first modern time-fuzed grenade. The Mills Grenade Bomb was used extensively during WW1.
100000000000000
Over 2000 canadians were killed in the battle of Ypres during WW1. This was the first time poison gas (made from chlorine) was introduced in WW1.
many
They came up with the schlieffen plan in 1905, or the swinging door plan, which would help them if they had a war on 2 fronts. However, this plan failed during ww1, contributing to the many causes which made them lose ww1.
Four