This is the 17612th most frequent Russian word.
тыла
"Тыла" is the genitive singular form of "тыл," meaning "rear" or "rear area" (as in military rear or back area).
Тыл is used here as a military term referring to the rear or behind the frontline of operations.
Войска были вынуждены отойти в тыл.
The troops were forced to retreat to the rear.
Тыл in this sentence refers to the area behind active battle lines where logistics and support are managed.
В тылу расположены все важные склады и станции.
All crucial depots and stations are located in the rear.
Тыл is metaphorically referring to the homeland or one's place of origin as a supportive base.