Short answers, pulled from the story.
Operation Panzerfaust was a 1944 Nazi German military operation to replace Hungary's leadership with loyalists. The coup began on the 15th of October 1944 when Adolf Hitler ordered Otto Skorzeny to seize control after learning that Regent Miklós Horthy was negotiating surrender to the Red Army.
Otto Skorzeny of the Waffen-SS and former special forces commander Adrian von Fölkersam led the commando forces into Hungary. Skorzeny personally directed the attack on Felix Bornemisza's offices where they kidnapped Miklós Horthy Jr. to use as leverage against his father.
The Arrow Cross Party seized the radio station shortly after Horthy signed off from his national broadcast on the 15th of October 1944. They installed Ferenc Szálasi as leader while using four Tiger II tanks and overwhelming force to secure Castle Hill and Budapest infrastructure.
Horthy signed a typewritten statement abdicating in favor of Arrow Cross leader Ferenc Szálasi because Nazi officials threatened to execute his son if he refused. Premier Géza Lakatos confirmed that Miklós Horthy Jr. remained a prisoner at Mauthausen concentration camp until the war ended on the 8th of May 1945.
Miklós Horthy was transported to Schloss Hirschberg near Weilheim, Germany, and guarded by 100 Waffen SS men at all times. He was later moved to the Nuremberg penitentiary where he remained imprisoned until his release on the 17th of December 1945.