In the year 2000, he penned, edited and published an 88-page volume titled '20 mi sadi ni 50 ajod satyaghatnao' (Gujarati: વીસમી સદીની પ૦ અજોડ સત્યઘટનાઓ) (Fifty historical events of the 20th Century).

The basic idea of Siachen Awareness Drive is twofold: (1) to ignite the spirit of patriotism in the people of India; (2) to encourage the youth to join the army and serve the nation.

Siachen Awareness Drive programs are absolutely free for all, and have successfully been done in cities like Ahmedabad, Surat, Rajkot, Vadodara, Bharuch, Bhuj, Anjar, Jamnagar, Kandivali (West) and Ghatkopar (West), Mumbai, Porbandar, Kalol, Anand, Killa Pardi (Valsad), Navsari, Junagadh, Morbi, Valsad, Nagpur (Maharashtra) etc.

On April 22, 2018, Harshal Pushkarna launched yet another book—titled "PARAM VIR CHAKRA"—dedicated to the brave soldiers of the Indian Armed Forces.

On an auspicious occasion of Dashera, on October 25, 2020, Harshal Pushkarna launched yet another book—titled "Shaurya"—"શૌર્યઃ ભારત માતાના સપૂતોના સાહસ-સમર્પણની અમરકથા" dedicated to the operations carried out by Indian Commandos.

From April, 2020 he regularly writes featured articles for a prominent Gujarati newspaper Gujarat Samachar.