Newly formed countries were unable to amicably divide the former Turkish lands and the Second Balkan War began in June 1913.

In late August, the regiment has not yet completed redeployment, so they joined the battle in Opole under Lublin, covering the concentration of forces being moved to the right flank of the front of the 18th Army Corps.

Iskritsky was awarded the Order of St. Vladimir 4th: Because a number of fights, administered by a division 21, 23, 24, 25 and 26 August and on 1 and 2 September 1914 showed exceptional courage and energy to leading the attack height.

Iskritsky commanded the rear guard of the 37th Infantry Division as part of 148th Regiment Kaspiyskiyskogo, hundreds of Orenburg Cossacks, and an artillery brigade.

On October 23, the 148th Regiment, under the cover of artillery, crossed the Vistula River and strengthened it on the left bank, in the meantime, Russian troops seized the Sandomierz.

To eliminate the bridgehead division commander Andrew Medardovich Zaionchkovskii formed the Sandomierz detachment under the command of Iskritsky, which consisted of 145th Novocherkassk Regiment, 148th Regiment of the Caspian and the four divisional artillery batteries, the vanguard detachment amounted to 2 battalion of the Caspian shelf, and a platoon of sappers.

Suffering heavy losses, up to several hundred people a day, the regiment held the position to delay the German offensive and wear down their counterattacks.

During the fighting at Jedwabne, Iskritsky was awarded the Order of St. Stanislaus 1st Class with Swords and was promotion to major general with the statement in the post.

Vereschina with a small force and in difficult terrain conditions, in spite of the heavy fire of the enemy, the constant attacks and the huge losses of the regiment, he kept defenses and made it possible to withdraw the troops and the many logistical institutions.

[3] On December 15, 1917, an armistice between Soviet Russia and the Central Powers was concluded and fighting stopped, but Iskritsky's 1st Siberian Corps remained a part of the 10th Army to face-off against the Germans.

However, he was virtually alone in this opinion among the Bolsheviks on the Central Committee, they wanted to continue the war while awaiting revolutions in Germany, Austria, Turkey, and Bulgaria.

The Central Powers repudiated the armistice on February 18, 1918, and in the next fortnight seized most of Ukraine, Belarus, and the Baltic countries in Operation Faustschlag.

The 1st Red Guard Brigade of Siberian riflemen under Iskritsky's command attacked positions of German troops on February 23, 1918.

By November 1918, Iskritsky had recreated and led the 7th Russian army on the Northern Front and he commanded the St. Petersburg Military District.

After Germany's surrender, and not wanting to take part in the civil war against the army of an independent Estonia and the Russian White Guard regiments caught in the Baltic, Iskritsky left the leadership of the troops and moved to a teaching job.

During interrogations, he revealed: During the October Revolution, I met no sympathy, because I did not understand it and thought it did not meet the interests of the Russian people.

However, for me it was obvious that the process of Bolshevization of Russia was inevitable and that we, the representatives of the old regime, will suffer for being on the wrong side, with all the ensuing consequences ...

Only after the war took a civil character and plot I formed the army of my opponents with a white hand were people with whom I grew up, was educated and served under the old regime, and that I could consider their enemies, I realized that I did not want to be the commander driving the Red troops and preferred to leave active duty for academics.