embattle1

[em-bat-l] /ɛmˈbæt l/
verb (used with object), embattled, embattling.
1.
to arrange in order of battle; prepare for battle; arm.
2.
to fortify (a town, camp, etc.).
Origin
1350-1400; Middle English embatailen < Middle French embataillier. See em-1, battle1

embattle2

[em-bat-l] /ɛmˈbæt l/
verb (used with object), embattled, embattling.
1.
to furnish with battlements.
Origin
1350-1400; Middle English embatailen. See em-1, battle2
British Dictionary definitions for embattle

embattle

/ɪmˈbætəl/
verb (transitive)
1.
to deploy (troops) for battle
2.
to strengthen or fortify (a position, town, etc)
3.
to provide (a building) with battlements
Word Origin
C14: from Old French embataillier; see en-1, battle
Word Origin and History for embattle
v.

late 14c., "prepare for a fight," from Old French embataillier "to prepare for battle," from en- (see en- (1)) + bataille (see battle (n.)). Related: Embattled; embattling. Originally of armies; of individuals as well since 1590s (first attested in Spenser).