I find these weapons interesting, mostly because the information you get is so often anecdotal. You don't see specifics. What types of grenades were issued? What were the ranges? How effective were those anti-tank grenades? How accurate were rifle grenades? How universally were they used? One of the most fascinating questions (to me) is the "air burst." You read these anecdotal accounts in memoirs about soldiers so proficient with rifle grenades that they could mentally compute the angle of the rifle and the depth that a standard pineapple grenade was mounted on the launchers to use the 4 second delay of the grenade itself to detonate the explosion just over the heads of enemy soldiers in foxholes or other barricaded positions. These fellows know their stuff, particularly the pony-tailed fellow on the left, Ian McCollum. He may be this generation's Ian Hogg, or perhaps fair to say that in some years time he will be another Ian Hogg. I don't believe anyone alive today knows as much about 20th century small arms as McCollum. Well worth your 16 minutes. Note the chart at about 7:00 minutes and the discussion on air bursts at about 10:00 minutes.