Spring 1941. Frustrated with military command’s handling of war, Stirling and Lewes formulate a plan to parachute men into the desert, attacking enemy forces from deep in the desert.

While recovering in hospital, Stirling ruminates on Lewes’s idea to attack the enemy from behind and hatches a plan to get approval for their unit from General Auchinleck at GHQ.

The newly recruited members of the SAS carry out a disastrous and devastating first mission. Determined to prove their strategy will work, they prepare to try again.

As the SAS's reputation spreads among the Axis Italian and German forces, another daring mission results in a shocking and devastating loss to the team.

Paddy initiates the Free French soldiers into some unorthodox training methods, and Stirling leads a raid on Benghazi accompanied by the prime minister’s son, Randolph Churchill.

A meeting with Winston Churchill sees the SAS embark on their most daring operation to date. While success sees them achieve official status, Stirling receives some terrible news.

当 SAS 面临新的任务和解散的威胁时，他们找到了一位名字熟悉的盟友。

当特别空勤团在西西里找到朋友和敌人时，在加维战俘营，大卫斯特林接待了一位意外的访客。

当特别空勤团在游击队的协助下穿越意大利时，希特勒发布的突击队命令威胁到其中一名队员的命运。

当雷格·西金斯努力应对时，他与一名意大利男孩建立了友谊，但最终却以更大的恐怖告终。

当约翰·托金试图返回部队时，特别空勤团的士兵们受到了蒙哥马利将军的来访，他闻到了酒精的味道，也闻到了英雄主义的味道。

SAS 回到英国，并有时间从意大利事件中解脱出来。比尔听到 SAS 在入侵法国中的角色后大吃一惊。