Keyword
territory
Info
FrequencyTop 500-600
Type
Kyōiku (5th grade) 
?
KankenLevel 6
Heisig1507
Readings
Composed of
orders
page
Mnemonic

You've got a whole page of orders from your commanding officer demanding that you defend your territory to the very last soldier.

Used in kanji (1 in total)
mountain ridge
Used in vocabulary (254 in total)
area; domain; territory; field; range; region
occupying; having (an area) all to oneself; military occupation; possession; capture
president (of a nation); big man; boss; buddy
Examples (156 in total)
You're stepping into dangerous territory.
They were not able to respect their new lord.
It's outside my expertise.