The youngest of Roman Hermaszewski and Kamila Bielawska's seven children, Mirosław was a survivor of the Volhynian slaughter during which the Ukrainian Insurgent Army murdered 19 members of his family, including his father when they attacked Lipniki on the night of 26–27 March 1943.

[b]Hermaszewski pointed out that after his mother barely escaped with her life from Lipniki, it was Ukrainian women from a neighbouring village who were acquainted with her that had given her shelter and looked after her during the ethnic cleansing of Poles and Jews from the region.

[8] After the incorporation of former Polish territory into the Ukrainian SSR at the end of the war, those of Hermaszewski's family who survived were forcibly deported to Wołów near Wrocław, where he completed elementary and high school.

[10] Hermaszewski finished his airplane pilotage course in Grudziądz in 1961, and in autumn of the same year started studying to be a fighter plane pilot at the "School of Eaglets" in Dęblin.

[13] Over the course of his military career, Hermaszewski piloted gliders and training aircraft such as the aforementioned TS-8 Bies, the CSS-13, the TS-11 Iskra, and the PZL-130 Orlik, various piston engine airplanes like the Yak-18, as well as a plethora of jets – such as the MiG-15, MiG-17, Polish derivatives of the latter, several versions of the MiG-21, the F-16, F-18, Mirage 2000-5, the Su-27, MiG-29 and others.

[14] Minutes before the launch of their spacecraft, Hermaszewski said: I, a citizen of the Polish People's Republic, feel honoured being granted the opportunity to carry out a spaceflight on the Soviet ship Soyuz 30 and the orbital station Salyut 6.

[1] A massive information and propaganda campaign around the Soyuz 30 mission and its participants was launched by the Polish government in coordination with the Soviet Union and other allied states in the Warsaw Pact.

[10] When martial law in Poland was introduced on 13 December 1981, Hermaszewski was named as a member of the Military Council of National Salvation (WRON) without his consent or knowledge.

[20] Over a year after the end of martial law in the Polish People's Republic, in November 1984, Hermaszewski was appointed commander of the Fighter Pilots School in Dęblin.

By 1987, he became head of that institution and his time as director has since then been assessed very positively, as his superiors noted the progress in team integration, as well as an increase in the didactic and educational level at the university.

The so-called "degradation act" was met with controversy in Polish and foreign media primarily due to the case of Hermaszewski, who was initially included as a member of the WRON without his consent or knowledge.

[30][31][32] In the end, the proposed law was vetoed by President Andrzej Duda, who used Hermaszewski's case as one of the reasons why the "degradation act" needs to be rewritten.

[37] During their training and after their joint mission to the Salyut 6 orbital station, Pyotr Klimuk and Mirosław Hermaszewski befriended each other – they stayed in touch and remained close friends ever since.

[38] Mirosław also befriended numerous other persons associated with the Soviet space programme during his time in Russia and Kazakhstan, including members of Yuri Gagarin's family and Alexei Leonov.

[e]Mirosław Hermaszewski supported Polish engineer Sławosz Uznański-Wiśniewski during the latter's selection process for the 2022 European Space Agency Astronaut Group.

[5] His son-in-law, Czarnecki, informed news media that Hermaszewski died in a Varsovian hospital due to complications resulting from a surgery he had undergone that morning.

[47] The ceremony was of a state nature with the participation of a Representative Regiment of the Polish Armed Forces; four F-16 fighter jets flew over the necropolis in tribute of the deceased general.