This is the 283rd most frequent Persian word.
سپاه
"سپاه" means "army" or "corps" in English.
Here, 'سپاه' refers to a large organized military force or army.
سپاه ایران در تاریخ بسیار تاثیرگذار بوده است.
The Iranian army has been very influential throughout history.
In this context, 'سپاه' metaphorically describes a large organized group, in this case, ants.
سپاه مورچگان در حال جمعآوری غذا بود.
The army of ants was gathering food.
Here, 'سپاه' represents an organized group or team dedicated to a specific purpose.