Lieutenant Jörn Ulrich (1913-1992) in cockpit of Gloster Gladiator.

He was Danish Navy fighter pilot who volunteered to fight for Finland in the Winter War of 1939-1940. He served in No. 26 Squadron (LeLv 26) of Finnish Air Force from January 12, 1940, and scored his first kill when he downed a Soviet SB-2 bomber in his first aerial combat on February 2. Later, on February 13, Ulrich downed two I-15bis fighters with his Gladiator before he was wounded and made forced landing moments later. His fellow pilot, another Danish volunteer, Lieutenant Kalmberg, was killed in the same aerial battle.

Whole story of Jörn Juel Ulrich:
http://surfcity.kund.dalnet.se/denmark_ulrich.htm

Danish volunteer pilot

Captain Jouko Myllymäki (1916-1944), 5 aerial victories in 150 sorties.

Served in No. 28 Squadron (LeLv 28) of Finnish Air Force in 1939-1942, and in Training Air Wing in 1942-43, after which he was promoted to captain and was put to a reconnaissance squadron (TLeLv 35), where he served for six months before becoming flight commander in LeLv 24. During the wars he shot down two enemy aircraft with Morane-Saulnier M.S.406 (I-16 - 9.3.1940 & SB-2bis - 26.9.41) and three aircraft with Bf 109 (P-51 - 18.6.1944, La-5 & P-39 - 23.6.44). He was first shot down by enemy fighter on 18.8.1941, and apparently second time on 25.6.1944 when his Messerschmitt went missing. Captain Myllymäki was awarded with 3rd and 4th class Cross of Liberty during the war.

Promotions:
Vänrikki (Second Lieutenant) - 23.6.1938.
Luutnantti (First Lieutenant) - 29.11.1940.
Kapteeni (Captain) - 8.7.1943.

Fighter pilots of Swedish volunteer unit Flygflottilj 19 in northern Finland during the Winter War. January-March 1940. 

F 19 was equipped with 12 Gloster Gladiators, 4 Hawker Harts and some transport/liason aircrafts. The unit destroyed 14 Soviet aircraft (10 in air, 4 on ground), and lost 1 Gladiator and 1 Hart to enemy action, and 2 Gladiators and 2 Harts to accidents. Three men were killed (John Sjöqvist, Åke Hildinger, Anders Zachau) and two were captured by Soviets (Arne Jung & Per Sterner). The captives were returned to Sweden in May 1940, after having spent four months in Soviet captivity.

In picture from left to right: Martin Wennerström, Åke Nettelbladt-Hollsten, Ian Iacobi (1 kill), Roland Martin (1 kill), Hans Olof Palme, Per-Johan Salwén (3 kills) and Gideon Karlsson (1 kill).
Sitting in the snow: Arne Frykholm (2 shared kills) and Carl-Olof Steninger (2 shared kills).