August–December

The club's first Football League match was against Southampton at Gillingham's home ground, Priestfield Road; Sisson, Battiste, Baxter, Wigmore, Holt, Hall, Gilbey and Roe all made their debuts. In front of a crowd of approximately 12,000 fans, Gilbey scored the club's first Third Division goal, but the game ended in a 1–1 draw.^[13][14] Gilbey scored again four days later as Gillingham beat Reading 2–1 away from home to register their first victory.^[15] Gillingham lost 3–0 away to Southampton on 4 September, a game in which the correspondent for the Daily Herald described them as "hopelessly outclassed",^[16] but then again beat Reading, after which they were 7th out of 22 teams in the league table, only one point behind leaders Portsmouth.^[17] The team drew their next two games but were then heavily defeated away to Merthyr Town, losing 6–1.^[15] The Daily Telegraph's reporter stated that the size of the defeat was more down to Gillingham's poor defence than the quality of their opponents' attack.^[18] Needham made his debut in the defeat and would play in every game for the remainder of the season.^[15]

Gillingham played Plymouth Argyle in both the last match of September and first of October and lost both games. Wood, Gillingham's top goalscorer in the previous season, played his first game of the season in the second of the two matches.^[15] He failed to score as Gillingham lost 1–0 to a goal in the last few minutes which the Weekly Dispatch's reporter described as "unexpected".^[11][19] Wood scored his first Football League goal for Gillingham a week later against Exeter City but his team lost for the fourth consecutive game,^[15] after which they had slipped to 19th in the table.^[20] Gillingham beat Exeter 2–1 at Priestfield Road on 16 October, but it would prove to be their last Third Division win for more than three months.^[15] They lost 4–0 away to Millwall on 23 October, after which the Dispatch's reporter noted that Millwall were considerably better than Gillingham,^[21] and ended the month with a goalless draw against the same opponents. The crowd for the latter game was reported as 12,000, tying with the game against Southampton in August for the largest recorded attendance of the season at Priestfield Road.^[15]

For the third consecutive match, Gillingham failed to score a goal when they lost 1–0 away to Newport County in the first match of November. A 4–1 defeat at home to the same opponents a week later left Gillingham bottom of the table.^[15][22] Hall was absent from the team for the only time during the season on 27 November; his replacement Thomas Robinson scored Gillingham's second goal as they came back from two goals down to draw 2–2 against Portsmouth,^[23] but it would prove to be the last of his three appearances for the team.^[24] Gillingham drew 1–1 away to Swindon Town on 11 December but then began a run of five consecutive league defeats. A week after losing to Northampton Town in the FA Cup, Gillingham were defeated by the same opponents in the league, losing 5–2 at home on Christmas Day.^[15] They then lost away to Northampton two days later.^[15] Gillingham's final match of 1920 resulted in another heavy defeat as the team lost 5–0 away to Luton Town; the correspondent for the Daily Telegraph stated that, had it not been for the performance of goalkeeper Branfield, "Gillingham would have suffered a more severe reverse".^[25] At the end of December Gillingham remained bottom of the Third Division.^[26]

January–April

Gillingham's first match of 1921 was away to Watford on 1 January and resulted in a fourth consecutive league defeat. Roe, brought into the team for the first time since November, gave his team the lead but Watford scored three times to secure what the Dispatch's correspondent described as an easy victory.^[27] Two weeks later, the team lost by the same score at home to Brentford; both Branfield and Robertson were missing from the team, the only time that either was absent during the season.^[15] The losing run came to an end with a 3–3 draw against Brentford on 22 January; Needham scored two goals and Wood one. Seven days later the team won their first Third Division match for more than three months when a goal from Needham gave them a 1–0 win at home to Bristol Rovers.^[15] Despite the victory, Gillingham remained bottom of the division at the end of January.^[28]

In February, Gillingham played four matches, which resulted in a draw and three defeats; the team only scored one goal in the four games. A week after beating Bristol Rovers at home, they lost 2–0 away to the same opponents,^[29] and then drew 0–0 at home to Norwich City.^[30] Gillingham played Norwich again on 19 February and lost 2–1, and ended the month with a 1–0 defeat at home to league leaders Crystal Palace. In a tactical change, Needham, who had played several games as a forward, moved back to a half-back position against Crystal Palace; Baxter, normally a half-back, was included in the team for the first time in over a month and played as centre-forward. After three games in which he did not score any goals he was dropped once more.^[15][31] Gillingham again played Crystal Palace in the first game of March; the score was 1–1 with approximately ten minutes remaining but the league leaders then scored three times to win the game.^[32] After three consecutive defeats, Gillingham beat Brighton & Hove Albion 1–0 on 12 March, but then failed to win any of the next five games. Over the Easter period the team played three games in four days, which resulted in a draw and two defeats.^[15]

Gillingham began April with a 2–1 victory at home to Grimsby Town and followed it up with a 1–0 victory away to Queens Park Rangers a week later; it was the first time during the season that they had won two consecutive league games.^[15] Wood scored a goal in both games and did so again as the team drew 1–1 at home to Swindon Town on 13 April.^[33][34][35] The run of three league games without defeat was the longest the team had managed since the previous September, but they then lost consecutive matches to Queens Park Rangers and Swansea Town.^[15] Gillingham ended April with a 2–1 win at home to Swansea Town, Wood scoring the winning goal, his fourth in six games.^[15][36] The team's final match of the season was at home to Luton Town and resulted in a goalless draw.^[15][37] Gillingham finished the season bottom of the Third Division, two points below 21st-placed Brentford.^[38] Having finished bottom of the Southern League Division One in the seasons immediately before and after the First World War, the team had now finished last in their division for three consecutive seasons.^[39]

Match details

Key

Results^[15]

Partial league table

Match details

Key

Results^[15]