He took in a war orphan and is raising her as his adopted daughter.
Literal
He [topic-は] war-disaster orphan [object-を] took-in adopted-daughter [as-として] is-raising.
戦災孤児 (war-disaster orphan) is a historical compound. ひきとる (take in/adopt) describes the act of bringing someone into one's care. ~として marks the capacity: 'as an adopted daughter.' ~ています indicates the ongoing state of raising the child.