Loyal guards call initially for ceasefire (5)
I believe the answer is:
truce
'ceasefire' is the definition.
(I've seen this before)
'loyal guards call initially' is the wordplay.
'loyal' becomes 'true' (I've seen this before).
'guards' means one lot of letters goes inside another.
'initially' says to take the initial letters.
The first letter of 'call' is 'c'.
'true' going around 'c' is 'TRUCE'.
'for' is the link.
(Other definitions for truce that I've seen before include "Suspension of war" , "Cessation of hostilities to allow peace talks" , "peace initiative" , "move towards permanent peace" , "Cuter (anag.)" .)