Cryptic

[Trevilino]

18a. Reasonably, American soldier may be billeted hereabouts (9)
_ O _ I_ _ _ _ _

24a. Against a metrical line (6)
A _ _ _ _ _

6d Irritates judges (5)
T _ I _ S

8d Remove the legends from histology – deem it nonsense (13)
_ E _ Y _ H _ _ _ G _ _ _

15d. A tack soldiers take initially may be studied by doctors (2,7)
A _/_ _ _ L _ _ _ T

[emeritus]

6d Tries

[factor-fiction]

tries

[Lie-in King]

18a Lo-GI-cally

[Mamyalynne]

18 logically

[Mamyalynne]

24 averse

[emeritus]

8 Demythologise

[Captain2]

A-verse

[shaneystar2]

1logically
6 tries
8 demythologise

[Lie-in King]

24a A-verse

[Trevilino]

You're all very quick - many thanks. Makes 15d look like this now

15d. A tack soldiers take initially may be studied by doctors (2,7)
A _/A _ L _ E _ T

[decmangan]

A nail men t

[Mamyalynne]

An ailment

[factor-fiction]

something ailment?

[dannyk13]

15d. An ailment