The Mills bomb is a popular name for the British Mills hand grenade. They were the first modern fragmentation grenades used by the British Army and saw widespread use in both World Wars. The Mills Bomb remained service in the British Armed Forces until 1972 when it was replaced by the L2 series. The Mills Bomb appears in the Allied Assault's expansion packs Spearhead and Breakthrough where it's used by British soldiers. It also appears in European Assault as the grenade for the British commandos.
The Mills Bomb appears in the Spearhead's singleplayer and multiplayer as the standard grenade for the British Soldiers. The Mills grenade is very similar to the Mark II Frag grenade but it has a slightly larger blast radius. It can be used in Breakthrough's singleplayer with hacking.
The Mills Bomb or Brit Grenade as it is named in-game returns in European Assault. It is usable during the St.Nazaire campaign as the grenade for the commandos. It functions the same as the other grenades.