Soldiers get initially unexciting range of food (4)
I believe the answer is:
Here is my best explanation:
'range of food' is the definition.
'soldiers get initially unexciting' is the subsidiary indication.
'soldiers' becomes 'men' (I've seen this before).
'get' is a charade indicator (letters next to each other).
'initially' indicates taking the first letters.
The initial letter of 'unexciting' is 'u'.
(Other definitions for menu that I've seen before include "list of available courses", "Food programme of restaurant", "list of available dishes", "list of options", "Restaurant list", "restaurant guide", "List of food items on offer", "Range of dishes available", "List of available food and drink" and "Food list".)