Pedzisa mutsara unotevera: Nokuda kwemabasa ake mumushandirapamwe uyu Forbes akasimudzirwa kuva kaputeni musi wa 25 June 1803, uye akaramba ari muvarwi kusvikira muna 1811, apo hurumende yake yakasarudzwa kuti iite chikamu che
kupinda muJava muna 1811, vachitungamirirwa naSir Samuel Auchmuty. Akaiswa mukutungamira kwemakambani emativi ezvikwata zvakasiyana-siyana zveBritain, uye mumusoro wavo vakatungamirira kurwisa pamitsara paWaltevreede neFort Cornelis, uye vaive kumberi mukubatana kwese nemauto echiDutch. Nokuda kwemabasa aya akavongwa kashanu mumirairo yepamutemo, akagamuchira menduru yegoridhe yeJava, uye akasimudzirwa kuva mukuru musi wa 29 Nyamavhuvhu 1811. Muna Chivabvu 1812 akatungamira maGrenadiers e59th regiment uye makambani akareruka e78th mukufambisa kwekudzikisa Hamengkubuwono II, Sultan weYogyakarta, uye muna Chivabvu 1813 akadzvinyirira kupandukira kwakakomba kwakaputika pakati pevaMalay paProbolinggo kumabvazuva kwechitsuwa cheJava. Mukumukira uku Lieutenant-colonel Fraser wechi78 akaurayiwa, uye Forbes, semukuru, akagamuchira danho mukusimudzirwa musi wa 28 Chikunguru 1814. Muna 1817 akadzokera kuScotland, ari mukuru mukuru chete akadzoka kubva pamakumi mana nemaviri, uye achiunza naye makumi matatu nematanhatu chete kubva pamazana gumi nemaviri uye faira. Akaenda achibhadharwa hafu uye akagara kuAberdeen, kwaakagara pasina rimwe basa kwoupenyu hwake hwose. Pana 10 January 1837 akasimudzirwa kuva colonel, muna 1838 akaita C.B., uye muna 1846 kusimudzirwa kuva mukuru mukuru.