— In-game description
The Frag Grenade returns in Battlefield 1 as one of many grenade types available, inflicting up to fatal damage against infantry and minor damage against vehicles. The full lineup resembles that of Battlefield 4, with the addition of two Anti-Tank Grenades and a Gas Grenade.
Unlike all prior games and contrary to the in-game description, frag grenades explode shortly after settling on a horizontal surface, instead of on a time delay. This behavior is similar to the Gas and Incendiary Grenades. These grenade variants are thus incapable of exploding in mid-air (e.g. thrown upward).
All grenade types are more quickly prepared than in past titles, no longer going through a draw phase nor removal of any safeties. Grenades can be resupplied from crates and pouches, requiring the player to stand nearby for a period of time.
It is no longer possible to make grenades the player's active weapon (in more recent games by holdingAllied Forces use the British ). Mills bomb, while Central Powers use the German Model 24 Stielhandgranate. Battlefield 1: In the Name of the Tsar adds the Russian Standard 1912 grenade for the Russian White and Red Armies. The three types are identical in function.
- In the game's Community Test Environment, the Allied Forces' Mills bomb was used as a placeholder for the Russian Empire to use before the Russian Standard 1912 grenade was implemented for testing the In the Name of the Tsar expansion pack.
- If a grenade lands next to the player character, the player character will audibly breathe in a panicked way.
- The Model 24 Stielhandgranate (identified by the lack of a belt clip on the head) used by the Central Powers is anachronistic during World War I. It is possible that a World War I-era Stielhandgranate was intended to be portrayed, but the belt clip was not modeled due to developer oversight.
- As part of the "Ammo 2.0" scheme, the Battlefield 1: They Shall Not Pass patch made grenades regenerate rather than being strictly supplied by ammo gadgets, and prevented them from being resupplied by Ammo Pouches. A later patch changed resupply back to dependency on pouches and crates.
- The Stick Grenade makes a spinning sound when it is thrown (due to its shape), while the Frag Grenade does not make a spinning sound.