Diu Fortress (Portuguese Diu)

Timeline

1. 1535–1540Diu Island · DiuFollowing the Battle of Diu in 1534, Portugal obtained Diu in 1535 from the Gujarat sultan Bahadur Shah, promptly building a fortress and harbor facilities and incorporating it into Portuguese India's defense and trade system to counter Ottoman–Egyptian power in the Indian Ocean.
2. 1536–1540Diu · DiuBy the late 1530s Diu Fortress was consolidated as a Portuguese Indian outpost on the west coast of North India, garrisoned with troops and controlling nearby waters, forming an east–west complement with Goa and securing the passage and resupply of Portuguese merchant ships in the Gulf of Gujarat.