In 1913, Gostho Pal, better known as the Chinese wall, joined the Club. His first match was against Dalhousie F C at the young age of 16.
In 1914, for the first time, Mohun Bagan was given the opportunity of taking part in the Calcutta Football League's Second Division. The Mariners finished joint runners up.
From 1915, Mohun Bagan started playing in the First Division League.
International newspapers like the London Daily, Manchester Guardian, Singapore Times etc., published the news of Mohun Bagan's IFA Shield victory.
In 1927, the Club played a charity match with Cheshire Regiment for the flood relief fund.
In 1921, a match between Mohun Bagan and Calcutta Club had to be stopped due to the huge crowd, which gathered to support Mohun Bagan.
In 1923, Mohun Bagan was invited to participate in the Rovers' Cup.
In 1924, Bhupendranath Basu's 35-year long association with Mohun Bagan came to an end after his demise.
In 1932, Sibdas Bhaduri, the star of Mohun Bagan's 1911 IFA shield winning team passed away. An award was declared, in his memory, for the Captain of each year's Shield winning team.
In 1931, the club lost Subedar-Major Sailen Basu. In his memory, they handed over a Shield to the IFA to be rewarded to the winner of the exhibition match between the European and Indian teams, each year.
Dwijendranath Basu, brother of Sailen Basu, who was the Club Secretary for a long time, and the club's founding members P.N.Mitra and Ajay Kumar Barat also passed away in 1932.
In 1935,Abdul Hamid joined Mohun Bagan. He was the first player to play with boots and inspired the others to do so.
In 1947, post-independence, Mohun Bagan became the first club to win theIFA Shield.
In 1945, Mohun Bagan's first Captain, Manilal Sen, and ex-member Sir N.N.Sarkar passed away.
In 1945, obliging to a request from the Calcutta Newspapers Relief Fund Committee, the Club played a charity match for the Flood Relief Fund for the people of Midnapore.
In 1949, on the occasion of 'Kashmir Divas' opening, the club went to Delhi to participate in some charity matches on behalf of the Defence Department.
In 1954, the Club won the double crown for the first time by winning the League Championship and the IFA Shield.
In 1956, Mohun Bagan won its first Rovers Cup title.
In 1959, the Club participated in a charity match at the request of Delhi Football Association for the aid of the Prime Minister's Relief Fund. Prime Minister Jawaharlal Nehru himself was present at the ground.
In 1953, Mohun Bagan won their first ever Durand Cup. His Excellency, Honorable President of India, Dr. RajendraPrasad was the Chief Guest of the prize distribution ceremony.
On 27th April, 1962, one of Mohun Bagan's most iconic footballers, Gostho Pal, received the Padma Shri Award from the then President Dr. Rajendra Prasad.
In 1964, Mohun Bagan's legendary player Chuni Goswami was presented the 'Arjuna Award'. The Club celebrated this occasion by felicitating him.
In the year of its Platinum Jubilee celebrations, 1964, the club enjoyed massive success winning the CAB Cricket League, Aga Khan Gold Cup in hockey, the IFA Shield, the League and Durand Cup in football, among others.
After receiving an invitation from the Chief Minister of Bihar, Shri Binodananda Jha, Mohun Bagan participated in two charity matches for the aid of Bihar Relief Fund.
From 1970 to 1972, for three successive years, Mohun Bagan was crowned champions of the Rovers Cup.
In 1971, the Indian Government honoured Mohun Bagan's Sailen Manna with the Padma Shri.
Mohun Bagan legend, Goshta Pal, famously known as 'The Chinese Wall', passed away on the 8th of April, 1976
On the 22nd of September, Mohun Bagan played a friendly against American soccer club New York Cosmos which had football legends like Pele & Jinarjio Chinaglia among its ranks. The match, played in front of a 80,000 strong crowd at the Eden Gardens, ended in a 2-2 draw.
In 1975, with Dhiren Dey's great efforts a concrete gallery at the club ground was finally completed.
From 1980 to 1982, Mohun Bagan won the Federation Cup three years in a row.
In 1984, a statue was established in honour of Goshta Pal, at the Goshta Pal Sarani. Later,the Indian Government issued a stamp in honour of GoshtaPal.
1n 1984, the Government of India honoured Chuni Goswami with the Padma Shri.
In 1980, the Calcutta Football League had to be abandoned due to a tragic incident on the 16th of August, at the Eden Gardens, during a Mohun Bagan- East Bengal match. A total of sixteen football fans died at that incident. From that day on, 16th of August has been observed as "Football Lovers' Day".