The most common and most likely answer to this crossword clue is the 9 letter word ARLINGTON
I've seen this crossword clue in Financial Times
A
R
L
I
N
G
T
O
N
More clues leading to the result ARLINGTON
- Place of burial ignorantly abused? Not unknown
- Departs from Durham town for military cemetery
- Angel abandoning first century cemetery here
- Favourite leader’s lost weight where some US VIPs have gained stones
- Woefully ignorant, left in cemetery
- Heather in painting about military cemetery
- Five hundred leaving NE town for US county
- Long train traveling to city near Washington
- Burial place of a Kennedy girl, not an Askew
Buddy explains!

The straight part
We know that "military cemetery" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case military cemetery = arlington.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.