Historically the No. 69 used as an offensive grenade during WWII due to the low amount of shrapnel, allowing it to be used in close quarters battle with less risk to the attacker. In Hidden &emp; Dangerous 2, however, the No. 69 is classified as an offensive grenade because it will explode on contact, and not bounce.
No. 69 MK1 - Offensive grenade on Wikipedia