That same autumn, he was sent to Russia to inform the King of the change of Russian throne and to conduct political negotiations.

[1] On 8 March Hegermann-Lindencrone sought to stop the Austrians at the Battle of Vejle, after which he returned to the Skanderborg area.

Faced with the great power of the Austrians, he found it right to evacuate the post in secret on the night of 11–12 March, and to return to Mors, whereby the enemy was misled.

The retreat was rightly sharply criticized by Dagbladet, which called him "General Backwards" due to his passivity.

[3][1] After his troops had rested and received a lack of equipment, he moved south again in April and made a plan with General Christian Lunding to throw the enemy out of Jutland and to threaten the Prussian Army at Dybbøl but the plan had to abandoned as when a new Prussian brigade arrived on the battlefield, the 4th Division had to retreat.

In the following years he wrote a military-political paper on the War of 1864 and its Influence on our Army, which provoked a response from Ditlev Gothard Monrad, which in turn spawned another writing by Hegermann-Lindencrone.

He became a Valet de chambre in 1828, a chamberlain in 1858, a knight of Dannebrog in 1845, commander in 1858 and received the Grand Cross in 1865.