Engaged in getting riding equipment for the assault (6)
I believe the answer is:
attack
'the assault' is the definition.
(attack is a kind of assault)
'engaged in getting riding equipment' is the wordplay.
'engaged in' becomes 'at' (I've seen this in other clues).
'getting' is a charade indicator (letters next to each other).
'riding equipment' becomes 'tack' (tack is a kind of equipment. I am not sure about the 'riding' bit.**).
'at'+'tack'='ATTACK'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for attack that I've seen before include "Assault - assail" , "Offensive or inslaught" , "Assault or criticise violently" , "attempt at seizure" , "Pitch into" .)