How many feature films had Martin Scorsese directed before he won his 1st Best Director Oscar for The Departed?

Before winning his first Best Director Oscar for "The Departed" in 2007, Martin Scorsese had directed 25 feature films. This encompasses a substantial and influential body of work that includes notable films such as "Taxi Driver," "Raging Bull," and "Goodfellas." Scorsese had been a prominent figure in the film industry for decades, and despite his critical acclaim and previous nominations, it wasn't until "The Departed" that he received the Oscar in this category. Understanding the timeline and filmography of Scorsese is essential for appreciating his impact on cinema and the significance of his Oscar win in light of his prolific career.