All of them were born in the liberated parts of Bulgaria and had military training: Vasil Ivanov Chochov – senior sergeant from the First Infantry Regiment, Aleksandar Marinov from Plovdiv – a student from the Non-commissioned Office School, Filip Grigorov - a student from the same school, Nikolay Petrov – non-commissioned officer and others.
Ilf and Petrov | Nikolay Nekrasov | Nikolay Atanasov | Vladimir Nikolayevich Petrov | Nikolay Rumyantsev | Nikolay Pirogov | Nikolay Bogolyubov | FK Makedonija Gjorče Petrov | Vladimir Petrov | Vitaly Petrov | Vasily Vladimirovich Petrov | Petrov (disambiguation) | Petrov | Nikolay Trusov | Nikolay Timofeev-Ressovsky | Nikolay Strunnikov | Nikolay Semyonov | Nikolay Muravyov-Amursky | Nikolay Kozlov | Nikolay Kostomarov | Nikolay Haytov | Nikolay Gnedich | Nikolay Antonov | Viktor Petrov | Stiliyan Petrov | Stanislav Petrov | Petrov's Defence | Nikolay Yegorovich Makarov | Nikolay Vasilyevich Komarov | Nikolay Smolensky |