Disguised as an American serviceman, the Russian soldier Kohler accompanied his superiors, Colonels Antonin Dovchenko and Irina Spalko, to infiltrate Hangar 51 in Nevada in 1957 in search of the Roswell remains.
In 1957 a soldier operated under the alias of "Kohler" and served under Colonels Irina Spalko and Antonin Dovchenko. Kohler sat with other members of Soviet Special Forces including Marelli in a cargo truck. Their mission was to infiltrate Hangar 51 on American soil, disguised as US soldiers and recover the remains of an interdimensional traveler that had crashed in Roswell ten years prior. Kohler and his colleagues disapproved of several teenagers driving past with music blaring.
He and his fellow soldiers stood in a circle around the staff car in which Indiana Jones and George 'Mac' McHale were held. As the two were hauled out, the Soviet soldiers kept their guns on them as Jones put on his fedora. The group soon entered the hangar, and laughed when Jones asked for their bullets to help in his search for the crate holding the remains. Ater the archaeologist had explained why to Spalko, Kohler watched in awe as the bullets Jones had taken flew through the air towards the heavily magnetised crate. Kohler and his colleagues looked on in awe as they viewed the contents of the box for the first time.
However, Jones used the distraction to his advantage as he stole Franklin's gun, knocked out Adams and threatened Spalko. The Soviets gave in when Spalko was threatened, but all immediately pointed their guns at Jones again when Mac betrayed him. Jones dropped his gun, which fired when it hit the ground, hitting one of the soldiers in the foot causing him to fire wildly. As Jones attempted to escape, Kohler and the others pursued, guns at the ready, but to no avail. Kohler was among the soldiers who were sent flying backwards when Jones drove a jeep through several boxes. Spalko then ordered him and the others to block the exits, which he ran off to do.
Kohler was later among those under Dovchenko who recaptured Indiana Jones, along with Mutt Williams, in Nazca, Peru. They took them to their camp near Akator in Brazil. Kohler and his colleagues were drunk as they watched Harold Oxley, another captive, dancing around the campfire, and laughed and cheered for him. They booed as Roosevelt and Marelli took Oxley away to Spalko. Kohler watched with his fellow soldiers as Indy and Spalko worked together to uncover the location of the Temple of Akator to return the Crystal Skull. When Mutt knocked over the table they were working on, the captives escaped, but were soon apprehended near a Dry sandpit.
Kohler was sitting in a jeep with four of his colleagues as the Soviet convoy travelled to Akator. During the jungle chase, Kohler manned a machine gun, which he fired at Indy, but missed every shot he fired. Indy jumped onto the jeep, knocking one of Kohler's fellow soldiers off of the vehicle. Kohler and his remaining comrades were knocked out, and fell from the car when it went over a tree stump, but, unlike two fellow soldiers, Kohler managed to grab onto the jeep, and was dragged along with it. He was nearly shot by Spalko as she fired a machine gun at Indy and his companions, but Kohler managed to climb atop the jeep, grab the Crystal Skull and throw it to Spalko, before Mac – feigning allegiance to Jones once again – knocked him off the jeep. He was left behind in Brazil.
Behind the scenes
Kohler was played by an uncredited performer in Indiana Jones and the Kingdom of the Crystal Skull. While it can't made out in the film itself without the Blu-ray edition, Kohler's name tag and the man who played him can prominently be seen standing next to director Steven Spielberg on the DVD's special features.