☪

Text style	Emoji style
☪︎	☪️
Text style is forced with ⟨︎⟩ and emoji style with ⟨️⟩.
☪ U+262A, ☪ STAR AND CRESCENT ← ☩ [U+2629] Miscellaneous Symbols ☫ → [U+262B]

English Wikipedia has an article on:

☪

Wikipedia

A star and crescent, and ancient symbol originally representing either the Sun and Moon or the Moon and Venus.

☪︎

1. Symbol of the Ottoman Empire.
2. Symbol of Islam.
3. (cartography) Marks a mosque on a map.