How many Surahs of the Holy Quran begin with (Praise be to Allah), mentioning their names, and what was the first verse revealed regarding fighting, and which Companion’s name was mentioned in the Holy Quran?

The number of Surahs beginning with "Alhamdulillah" (All praise is due to Allah) is five: Al-Fatiha, Al-An'am, Al-Al-Kahf, Saba, and Fatir. The first verse revealed concerning jihad is: "Permission [to fight] has been given to those who are being fought, because they were wronged." The only companion whose name is explicitly mentioned in the Quran is Zayd ibn Haritha.