Disambiguation evidence for Commander of 21st Army Group via surface form

"Commander-in-Chief 21st Army Group"

Triples (2)

Triples where some other subject referred to this entity as "Commander-in-Chief 21st Army Group".

General Officer Commanding-in-Chief Second Army → reportsTo →
"Commander-in-Chief 21st Army Group"
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General Officer Commanding-in-Chief First Canadian Army → reportsTo →
"Commander-in-Chief 21st Army Group"
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