Norman,
thanks for the info above. Quite interesting for me, who also loves R/G's and has made my views on the subject of Rifle Grenades versus the 40mm grenades well known here. One quick question though. Did the UK ever test the Belgium "HE-RFL 55 BTU rocket-assisted Mecar Rifle Grenade" in its search for a rocket assisted grenade(s)???
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Mark,
The honest answer is I don't know (yet). We did trials for different purposes and probably most trials were nothing to do with acquisition for Service (e.g. Tech Int type exploitation of grenades started in WW1) but quite a lot of the documentation for these tests have not yet reached our National Archives so there is a chance more will emerge on rocket assisted grenade trials. But from what I have seen in the public domain (e.g Ordnance Board papers and trial reports from our Infantry Trials and Development Unit) we did not test the rocket assist Mecar RFL 55. I will keep an eye open for relevant reports.
Historically the British Army has had a rather love-hate relationship with the rifle grenade; from the 1911 (ish) period when the War Office rejected Hales 'J' pattern grenades (and then couldn't get enough a couple of years later) through a century of periodic WO requirements statements insisting rifle grenades are 'in' and then that they are 'out' - designers must have pulled their hair out. Of course it was not just HE grenades: signal, smoke etc., all felt the blue pencil when some work experience third lieutenant fresh out of the factory was given the Infantry Weapons requirements paper to write at the War Box. It is almost all 40mm cartridges now but I am pleased to say in British Service that these are designated 'Rounds' rather than grenades...