Here are the possible solutions for a french military strategist described it in 1918 as an interesting toy but with no military value clue
Answer
Clue
Relevancy
airplane
Clue
A French military strategist described it in 1918 as "an interesting toy" but "with no military value"
Definition
a winged aircraft propelled by jet engines or propellers
suntzu
Clue
Ancient military strategist
wargame
Clue
Military strategist's plan
etaoin
Clue
"___ shrdlu" (nonsense phrase of old type-setting lore which has an interesting backstory but I can't do it justice in the space of a single clue even a long one like this so yeah it's just kind of a
isitart
Clue
"Interesting ... but museum-worthy?"
"Interesting ... but museum quality?"
untoldstory
Clue
Interesting but unknown part of a tale
underwater
Clue
Having a market value below its book value, as a loan
