Just for reference, everything in that video was available in 1918. Goddard’s tube-launched rockets (the Bazooka), the high-explosive warheads, the electrically-opened rocket-pad doors, even the firing controls.
Everything. Heck, even the color filming of the rocket launches was available in 1918.
A century ago.
The range and explosive power of those rockets is considerably **less** than the German Big-Bertha artillery of 1918, too.
Not by any 1st world standard in the past 100+ years.
By golly, I haven’t heard Robert Goddard’s name mentioned in forever !
Quite an inventor.