Throughout history, some of the most remarkable military operations remained hidden for years. Some changed the course of a war, while others proved that deception, intelligence, and meticulous planning can be just as decisive as firepower.

Operation Neptune Spear (2011)

For years, it was one of the United States' best-kept secrets. A small team of DEVGRU operators assaulted the compound in Abbottabad, Pakistan, where Osama bin Laden was hiding. The raid lasted barely 40 minutes and brought to an end a manhunt that had continued for almost a decade.

Operation Red Wings (2005) 
Although it ultimately ended in tragedy, the reconnaissance mission carried out by four U.S. Navy SEAL operators in Afghanistan remained classified for a period of time. The story later became widely known through Lone Survivor, the book written by Marcus Luttrell, the team's sole survivor.

Operation Mincemeat (1943) 
Probably one of the greatest deception operations of the Second World War. British intelligence used the body of a man dressed as a Royal Navy officer to deliver forged documents to the Germans, suggesting that the Allied invasion would take place in Greece rather than Sicily. The deception worked, prompting Germany to divert forces and helping ensure the success of the Allied invasion of Sicily. Decades later, the operation inspired several books and the film Operation Mincemeat.

Operation Entebbe (1976) 
When an Air France aircraft was hijacked and diverted to Uganda, Israel launched what many considered an impossible mission. After flying more than 4,000 kilometers, commandos from Sayeret Matkal stormed Entebbe Airport and rescued 102 hostages in an operation that is still studied in military academies as one of the most successful hostage rescues in history.

The Importance of Secrecy 
All of these operations share one essential factor: their success depended on no one knowing they were taking place. In some cases, the details remained classified for decades and only became public after official documents were declassified or the participants were finally able to tell their stories. 
Because in special operations, the best mission is often the one nobody ever hears about.